On June 19, the Kraken cryptocurrency exchange was hacked, during which unknown persons stole $3 million. It turned out that smart contract auditor CertiK was behind the attack
What CertiK experts said
Even before it became known that the CertiK auditor was involved in the hack, Kraken security director Nick Percoco claimed that on June 9 the exchange received a report about the vulnerability found as part of the Bug Bounty program.

However, according to him, experts did not share any details. Instead, they decided to take advantage of the bug and withdraw $3 million from the site.